Composite dump-car.



I A. CAMPBELL.

COMPOSITE DUMP CAR.

APPLICATION FILED JULY 29. I918- 1,285,614. Patented NOV. 26, 1918.

2 SHEETS-SHEET I.

I fweizfor Patented Nov. 26, 1918.

UNITED STATES rnrrnn'r OFFIG.

ARGYLECAMPBELL, or CHICAGO, ILLInoIs, AS-SIGNQR 'ro ENTERPRISE RAI WAYEQUIPMENT COMPANY, or cn caeo, ILLINOIS, A conronarronor ILLINOIS.

I comosmmm m Specification of Letters Patent. Pirtgflfgd Now-2t}, 1918,

A neation maritime. 191s. Serial N f247b89.

"To, all whom it may concern:

Be'it known thatI, ARGYLE CAMPBELL, a

' citizen of the UnitedStates, residing at Chiprovide a composite car ofthe type above'indicated wherein the car is provided with drop bottomdoors having the operating mechanism therefor located above the floorlevel and so arranged as to obtain maximum load carrying capacity, andwherein the sides of the car provide an exceptionally T strong loadcarrying element of the'structure.

. In the drawing forming a part of this specification, Figure 1 is aside elcvatlon of a little less than one half of a car e: nbody1ng myimprovementsg-Fig. 2 is a part end elevation, part transverse verticalsectional view of the car shown in F ig. 1, the section being takenintermediate two of the car side stakes, and Fig. 3 is an enlargeddetailed sectional view illustrating more particularly theconstructionat the lower portionof the side wall of the car where the same joins thecross bearers of the under frame. In said drawing, the car is shown asprovided with a. rder, built-up center sill as indicated at 10, bolsters11, cross bearers 12, preferably of pressed metal, pressed metal sidestakes 13-13, end walls 1% and pivoted, side dumping drop bottom doors15-15, the latter being hinged alon their inner edges to the center sillas indlcated at 16 in Fig. 2.

Each side wall of the car is formed by a series of planks as indicatedat 17, 18 and 19, together with an angle upper truss member 20 and alower angle truss member 21. The side wall consists of the main verticalsection formed by the plank 12, an inwardly and downwardly inclinedsection formed by the planks l8, and a narrow vertical section formed bythe planks 19, terminating at the floor level.

To strengthen the connection between the stakes and the cross'members ofthe'car under frame, I employ pressed sheet metal stake fillers asindicated at" 22 and illustrated most clearly in Fig.3. 'Thesefillersare riveted to the cross members of the under frame andto the sidestakes 13an d furthermore form supports on which rest the lower trussangles 21. p p

For operating the doors 15, I employ on each'side'of the car alongitudinally extending operating shaft 23, mounted in suitable bearingbrackets 24 that are secured to the fillers'22 and a'tthe end of thecar. In this "connection it will be understood that the fill ers aresuitably perforated to accommodate the shaft. For each door 15 there areprovided two sets of linkages, each set comprising a. hook element 25,short link 26, links 27 and 28 and aterminal link'29 pivotally connectedto a drum 30, mounted on the shaft 23. This form of linkage mechanism iswell known and need notbe described more 'spe cifically. 7

Along the lower edge of the section 19 of each side wall I provideanother angle 31 as 'side walls I provide a series of-diagonal shown inFigs. 2 and 3, said angle 3l'resting bracing members as indicatedat 32and 33,

the arrangement being such in the constructionillustrated in thedr'awingthat the diagonal members act as tension elements, al-

, though it isevident that their position might be reversed and the sameplaced under compression.

By referring to Figs. 2 and 3 it will be noted that I place theoperating shafts 23 very close to the side stakes and above the floorlevel of the car, and some of the elements of the flexible connectionsare disposed partly outside of the vertical'planes corresponding to theouter surfaces of the wooden section 17 of the car sides. In thismanner, I am enabled to reduce the space required for the door operatingmechanism and thereby increase the load carrying capacity of the car.This same object is further promoted by the fact that the side wall ofthe car, particularly the section 17, is designed to carry a largeportion of the load by reason of the employment of the upper and lowertruss members 20 and-21 and supporting'said section 17 of the side wallon top of the stake fillers 22; in other words, the side walls of thecar constitute girders for carrying the major portion of the load and Iam enabled to obtain substantially as large a capacity for the car withmy composite construction as has ever been obtained in an all-steelconstruction, and a greater capacity than has heretofore been possiblein a wood or composite car of the general type disclosed in the drawing.

Although I have herein shown and de scribed what I now consider thepreferred manner of carrying out my invention, the same is merelyillustrative and I contemplate all changes and modifications that comewithin the scope of the claims appended hereto.

I claim 1. In a dump car, the combination with the under frame, sidestakes, and pivoted floor doors, of side walls, each of said side wallscomprising an upper metal truss member, a lower metal truss member, thelatter being located above the floor level, and wood planks between saidtruss members and all secured to said side stakes, each side wall havingalso an inwardly and down wardly inclined extension, and door operatingmechanism. located beneath said in clined extensions.

2. In a dump car, the combination with the under frame, side stakes andpivoted side dumping floor doors, of composite side walls secured tosaid side stakes, and side stake fillers located at the bottom of theside walls and uniting the side stakes with the cross members of theunder frame, said fillers also serving as supports for the side walls.

3. In a dump car, the combination with the under frame, comprisingcenter sill and cross members, of side stakes, pressed metal fillerslocated at the junction of each side stake and cross member of the underframe, said fillers extending above the floor level of the car,longitudinally extending angle irons secured to the inner sides of theside stakes of the car and resting upon the tops of said fillers, upperangle irons secured to the tops of the side stakes on each side of thecar, Wood planking also secured to the side stakes and extending betweensaid upper and lower angle irons, and diagonal bracing members, saidangle irons, planks and bracing members constituting girders adapted tocarry the major portion of the load of the car.

4:. In a dump car, the combination with the under frame comprising acenter sill and cross members. of side stakes secured to the outer endsof the cross members of the under frame, floor doors pivotally attachedalong their inner edges to the center sill,-fillers uniting the sidestakes with the respective adjacent cross members of the under frame,said fillers extending above the floor level, a longitudinally extendingoperating shaft on each side of the car passing through said fillers andlocated above the floor level and disposed closely adjacent therespective side stakes, flexible connections from said shafts to thedoors, and composite side walls, each of said side walls having a lowerinwardly and downwardly inclined portion forming a shield for the dooroperating mechanism, each side wall also including a lower truss memberresting upon the tops of the corresponding side stake fillers.

In witness that I claim the foregoing I have hereunto subscribed myname.

ARGYLE CAMPBELL. Witnesses WM. H. HAIGHT, META SCHMIDT.

Copies of this patent may be obtained for five cents each. by addressingthe Commissioner 0! l'atcnts.

Washington, I). C."

